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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5791) A nodetool command to validate all sstables in a node
Date Wed, 08 Jul 2015 19:19:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14619194#comment-14619194
] 

Jonathan Ellis commented on CASSANDRA-5791:
-------------------------------------------

More minor point:

I'm not sure that keeping "extended verify" code around is worth it.  Since the point is to
work around not having a checksum, we could just scrub instead.  This is slightly more heavyweight
but it would be a one-time cost (scrub would build a new checksum) and we wouldn't have to
worry about keeping two versions of almost-the-same-code in sync.

> A nodetool command to validate all sstables in a node
> -----------------------------------------------------
>
>                 Key: CASSANDRA-5791
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5791
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: sankalp kohli
>            Assignee: Jeff Jirsa
>            Priority: Minor
>             Fix For: 2.2.0 beta 1
>
>         Attachments: cassandra-5791-20150319.diff, cassandra-5791-patch-3.diff, cassandra-5791.patch-2
>
>
> CUrrently there is no nodetool command to validate all sstables on disk. The only way
to do this is to run a repair and see if it succeeds. But we cannot repair the system keyspace.

> Also we can run upgrade sstables but that re writes all the sstables. 
> This command should check the hash of all sstables and return whether all data is readable
all not. This should NOT care about consistency. 
> The compressed sstables do not have hash so not sure how it will work there.



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